01 July 1997
the embedment depth, overhead clearance is not sufficient for the full length of the pile, or the driving rig
cannot accommodate the full length of the pile. Splices available for joining various types of piles are
provided in figure 2-3. These splices should be made as strong as the pile.
(a) Splices for composite piles, especially concrete-steel or concrete-wood, are time
consuming and difficult to accomplish. Composite piles should be avoided for this reason.
(b) Splices made during installation of the pile take time and should be avoided where soil
freeze can occur. Soil freeze increases the penetration resistance and makes further driving of the pile
more difficult and may even lead to driving stresses that could damage the pile.
(c) The type and quality of splice can be determined by the contract pile installation documents
if splices can be made in the leader. The top of the previously driven portion of the pile may have been
damaged and may require some cutting and leveling before the next section can be added. Fittings for part
of the splice should be secured to the pile that is waiting to be driven to expedite the splicing operation.